Feldspars are anhydrous aluminosilicates, originated by the
crystallization of eruptive rocks, representing the most frequent rock-forming
element. According to the prevailing component we can define potassium,
sodium-potassium and sodium-calcium feldspars.

In 2015 LB MINERALS launched into the market these products – potassium
feldspars Ž65K13, Ž65K20, Ž75K13 a Ž75k20 in quality STABIL
and Ž60K25 and Ž70K20 in quality MIKRO.